- OR -

Performance Seres - Full System

  • Performance Seres - Full System
  • Performance Seres - Full System
  • Performance Seres - Full System
  • Performance Seres - Slip On Orange
  • Performance Seres - Slip On Brushed
  • Performance Seres - Head Pipe
  • Performance Seres - Head Pipe
  • Performance Seres - Slip On Black

KTM® KTM 450/525 XC

The KTM 450/525 XC HMF system is available as a Slip-On or Full System in the Performance and Competition Series.  Depending on the exhaust series, the slip-on system picks up 10-15% more horse power, and the Full System picked up 15-25%.  With T6061 Aluminum shells, each HMF exhaust system weighs substantially less that the stock exhaust.

Exhaust Fits:
(08-13) KTM® 450/525 XC

Fuel tuning is required learn more

Fuel Tuning is absolutely required when installing an HMF Exhaust on this machine. Failure to tune the engine can cause excessive damage to the exhaust system and engine, while voiding the warranty on your exhaust and possibly on your machine. (check with local dealer). See the tuning settings below for the proper fuel tuning solution on your machine.

Exhaust Systems

KTM® KTM 450/525 XC ATV Accessories

Tuning

Recommended Tuning
175 Keihin Hex Main Jet, 45 Pilot Jet (45N424-21)

HMF Basic Jet Kit Includes
165, 175 Keihin Hex Main Jet, 45 Pilot Jet (45N424-21)

Low Speed Fuel

Going down on the number scale will reduce low speed fuel. Going up on the number scale will increase low speed fuel.

Mid Range Fuel

Going down on the number scale will reduce mid range fuel. Going up on the number scale will increase mid range fuel.

High End Fuel

Going down on the number scale will reduce high end fuel. Going up on the number scale will increase high end fuel.

Green Lower Switch Point

Going down on the number scale will turn green mode on earlier. Going up on the number scale will turn green mode on later. These modes typically will not need adjusted from their base setting.

Yellow Lower Switch Point

Going down on the number scale will turn yellow mode on earlier. Going up on the number scale will turn yellow mode on later. These modes typically will not need adjusted from their base setting.

Red Lower Switch Point

Going down on the number scale will turn red mode on earlier. Going up on the number scale will turn red mode on later. These modes typically will not need adjusted from their base setting.

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